What will the following code result ? List<Optional<Integer>> intList = new ArrayList<Optional<Integer>>(); intList.add(Optional.empty()); intList.add(Optional.of(2)); intList.add(Optional.of(3)); intList.add(Optional.of(4)); System.out.println(intList.get(null));

Interview Questions and Answers

Q1. What will the following code result ?

List> intList = new ArrayList>();

intList.add(Optional.empty());
intList.add(Optional.of(2));
intList.add(Optional.of(3));
intList.add(Optional.of(4));

System.out.println(intList.get(null));

Ans. Compile time error at last line as the get method expect argument of type native int.

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